The Black Keys are certainly keeping their attorneys busy these days. According to the Hollywood Reporter, the Grammy Award-winning duo has filed a lawsuit in New York against casino company Pinnacle Entertainment and commercial advertising firm Manhattan Production Music, accusing each of unlawfully using the tune 'Howlin' for You' from their 2010 album 'Brothers.'

Pinnacle is accused of featuring music that is "substantially similar" to the Black Keys' song in a commercial for the company's L'Auberge Casino Resort Lake Charles that aired last September. A month later, a second commercial allegedly aired featuring "infringing music" for another casino owned by Pinnacle. Although it appears videos of the ads have been removed from YouTube since the legal action was filed, the Hollywood Reporter claims that a representative from Pinnacle recently Tweeted a response to the first charge: "We bought a licensed musical interpretation of the song."

Last fall, the Keys settled separate copyright infringement lawsuits against Pizza Hut and Home Depot out of court. Terms were not disclosed, but considering this latest legal maneuvering, we're guessing those terms were somewhat generous for the band.